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Finding the Fourth Proportional to 310,684.72, 429,509.28 and 307,842.84

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Solution

The fourth proportional to 310,684.72, 429,509.28 and 307,842.84 is: 425,580.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,684.72 : 429,509.28 = 307,842.84 : x
  2. Step 2: Convert to fraction form
    310,684.72/429,509.28 = 307,842.84/x
  3. Step 3: Cross multiply
    310,684.72x = 429,509.28 × 307,842.84
  4. Step 4: Simplify right side
    310,684.72x = 132,221,356,561.56
  5. Step 5: Solve for x
    x = 132,221,356,561.56/310,684.72
  6. Step 6: Final answer
    x = 425,580.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.